基于土壤稳定性的地质灾害发育特征研究  

Research on Development Characteristics of Geological Hazards Based on Soil Stability

作　　者：叶莹莹 孙超 曹颐 张娜娜 韩冲 YE Yingying;SUN Chao;CAO Yi;ZHANG Nana;HAN Chong(Hebei Institute of Environmental Geology Exploration,Hebei Shijiazhuang 050021,China)

机构地区：[1]河北省地质环境监测院,河北石家庄050021

出　　处：《河北师范大学学报（自然科学版）》2024年第6期622-629,共8页Journal of Hebei Normal University：Natural Science

基　　金：中国地质调查局项目(DD20160328);河北省地质资源环境监测与保护重点实验室开放课题(JCYKT202010)。

摘　　要：蔚县位于太行山、燕山、恒山交会处,其复杂多样的地质环境导致地质灾害多发.地质灾害的发生与土体稳定性关系十分紧密,利用GIS软件的空间叠加分析方法,基于DEM及土地利用数据,根据坡度、坡向和土地利用类型构建评价指标体系,快速有效地评价蔚县土壤稳定性.研究结果表明,蔚县土壤稳定性可以划分为不稳定、较稳定和稳定区域,其中不稳定区域面积约643 km^(2),占县域面积的19.97%,主要位于县域南部的深山区,通过与现有崩滑流地质灾害分布对比可知,现有地质灾害中65.63%分布于该区域,与现状地质灾害高发区域基本一致.该方法简便、实用,可以对相关区域的地质灾害防治提供参考.Yuxian county is located at the intersection of Taihang Mountain,Yanshan Mountain and Hengshan Mountain.The geological environment of Yuxian county is complex and diverse,and geological disasters occur frequently.The occurrence of geological disasters is closely related to soil stability.By using spatial overlay analysis method of GIS software,based on DEM and land use data,an evaluation index system is built using slope,aspect and land use type to evaluate the soil stability of Yuxian county quickly and effectively.Yuxian county is divided into unstable area,relatively stable area,and stable area according to soil stability.Results show that the unstable area is about 643 km~2,accounting for 19.97 % of the county area.It is mainly located in the deep mountains in the southern part of the county.Compared with the distribution of existing geological disasters,such as collapse,landslide and mudslide,it is found that 65.63 % of the existing geological disasters occur in this area,which is basically consistent with the current high-prone areas of geological disasters.This method has the characteristics of simple and practical,and can provide reference for the prevention and control of geological disasters in related areas.

关 键 词：土壤稳定性 地质灾害 GIS 

分 类 号：P694[天文地球—地质学]